Subplot existing plots with left, right, bottom, and top axes.

Hello

I have to plot with different units like the left axis has km unit and the right axis has mile unit. When I plot the right and top axes not shown in the subplot. Please see the code.

figure('Renderer', 'painters', 'Position', [10 10 700 500])
h1=figure (1)
x=0:1:10;
y=x.^2;
ax1 = gca;

plot(x,y)
grid on
set(gca,'GridLineStyle',':')
xt = get(ax1,'XTick')
yt = get(ax1,'YTick')
ax2 = copyobj(ax1,h1);

set(ax2,'XAxisLocation','top')
set(ax2,'YAxisLocation','right')

x = xt*3.28084;

y = yt*10.7639;

set(ax2,'XTickLabel',x)
set(ax2,'YTickLabel',y)

figure('Renderer', 'painters', 'Position', [10 10 700 500])
h2=figure (2)
x=0:1:10;
y=x.^0.5;
ax1 = gca;

plot(x,y)
grid on
set(gca,'GridLineStyle',':')
xt = get(ax1,'XTick')
yt = get(ax1,'YTick')
ax2 = copyobj(ax1,h2);

set(ax2,'XAxisLocation','top')
set(ax2,'YAxisLocation','right')

x = xt*3.28084;

y = yt*10.7639;

set(ax2,'XTickLabel',x)
set(ax2,'YTickLabel',y)

figlist=get(groot,'Children');
 
newfig=figure;
tcl=tiledlayout(newfig,'flow')
 
for i = 1:numel(figlist)
    figure(figlist(i));
    ax=gca;
    ax.Parent=tcl;
    ax.Layout.Tile=i;
end

Answer 1

[Jatin]

Hi @Mohammed Ali,

You can utilize a tiled layout using "nexttile", where each tile contains an independent plot. Additionally, by using "linkaxes", you can link "ax1" and "ax2" to synchronize the pan and zoom actions between the axes. Please check if the following code resolves your issue:

% Create a new figure with tiled layout
newfig = figure('Renderer', 'painters', 'Position', [10 10 700 500]);
tcl = tiledlayout(newfig, 2, 1); % Two rows, one column

% First subplot
nexttile;
x = 0:1:10;
y = x.^2;
plot(x, y);
grid on;
set(gca, 'GridLineStyle', ':');
xlabel('Distance (km)');
ylabel('Value (km^2)');

% Create secondary axes for miles
ax1 = gca;
ax2 = axes('Position', ax1.Position, 'XAxisLocation', 'top', 'YAxisLocation', 'right', 'Color', 'none', 'XColor', 'r', 'YColor', 'r');
linkaxes([ax1, ax2], 'xy'); % Link axes for synchronized zoom and pan

% Set secondary axes ticks and labels
x_miles = x * 0.621371; % Convert km to miles
y_miles = y * 0.386102; % Convert km^2 to mile^2
xticks(ax2, x);
yticks(ax2, y);
xticklabels(ax2, num2str(x_miles', '%.2f'));
yticklabels(ax2, num2str(y_miles', '%.2f'));
xlabel(ax2, 'Distance (miles)');
ylabel(ax2, 'Value (mile^2)');

% Second subplot
nexttile;
x = 0:1:10;
y = x.^0.5;
plot(x, y);
grid on;
set(gca, 'GridLineStyle', ':');
xlabel('Distance (km)');
ylabel('Value (sqrt(km))');

% Create secondary axes for miles
ax1 = gca;
ax2 = axes('Position', ax1.Position, 'XAxisLocation', 'top', 'YAxisLocation', 'right', 'Color', 'none', 'XColor', 'r', 'YColor', 'r');
linkaxes([ax1, ax2], 'xy'); % Link axes for synchronized zoom and pan

% Set secondary axes ticks and labels
x_miles = x * 0.621371; % Convert km to miles
y_miles = y * sqrt(0.621371); % Convert sqrt(km) to sqrt(miles)
xticks(ax2, x);
yticks(ax2, y);
xticklabels(ax2, num2str(x_miles', '%.2f'));
yticklabels(ax2, num2str(y_miles', '%.2f'));
xlabel(ax2, 'Distance (miles)');
ylabel(ax2, 'Value (sqrt(miles))');

Refer to the below documentation on "nexttile" for more details:

https://www.mathworks.com/help/matlab/ref/nexttile.html